Credit: The Associated Press

Dario Franchitti, of Scotland, prepares to drive during practice for the Indianapolis 500 auto race at the Indianapolis Motor Speedway in Indianapolis, Wednesday, May 15, 2013.

INDIANAPOLIS — Three-time Indianapolis 500 winner Dario Franchitti topped the speed chart Wednesday at Indianapolis Motor Speedway, turning a lap at an average of 224.236 mph in the fifth practice session for the May 26 race.

"It doesn't really count for much, but it's nice nonetheless," said Franchitti, the Target Chip Ganassi Racing driver who will be 40 on Sunday.